I’ve had a Sony blue ray player for a few years now. Always works great.
But I have never upgraded it. I have no need to. I use it to watch movies and it does that great. There is a legal compatibility thing here. I rememder dealing with it regarding “Compact Cassettes” back in the 1970’s. To carry that label a cassette player had to play any cassette and a cassette had to play in any cassette deck. It was an issue with the four track cassette recorders because they used all four tracks to record in one direction.
I’ve assumed the same is true with Blue Ray, DVD, Laserdisk, etc. That is, if your player is a blue ray player, it MUST be able to play all blue ray discs, and if you have a blue ray disc, it must be able to play in any blue ray player.
Of course, I could be wrong about this, but if this compatibility is non-existent, it would kill sales of the format. That is the whole point of compatibility.
Also, players are so cheap now that I’d just replace one rather than upgrade it.
You appear to have a stand alone player, looks as though the poster’s problem involves his use of a personal computer “(my PC is my A/V system)” as a go-between the DVD reader and the TV. imo